A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and interrupt current flow. Many different classifications of circuit breakers can be made, based on their features such as voltage class, construction type, interrupting type, and structural features.
Size and type of main MCCB/RCCB/ELCB for continuous load and non continuous load.
Sensitivity of MCCB/RCCB/ELCB.
Size and type of sub circuit MCCB/MCB for continuous and non continuous load.